"Hillary Clinton's speech was very unifying," Hughes said. "It sounded very much like a general election speech.

"We, as the Republican Party, need to start unifying behind the front-runner, the clear front-runner in every category, and start trying to unify the message.

"If Sen. Cruz and Gov. Kasich really wanted to help our party and be a part of the process, right now would be a good chance for them to be the bigger people and go to Donald Trump and say: 'How can we help you be able to beat Hillary Clinton in the White House? We want to be a part of that team.'

"That would be the right thing to do at this point because obviously they have won the overwhelming majority in both the numbers, the delegates, the popular vote in every category that exists within this election."